Separating apparatus



Aug. 27, 1 946.

C. B. SCHNEIBLE SEPARATING APPARATUS Filed Apr i1 15, 1942 Patented Aug. 27, 1946 UNITED STATES PATENT OFFICE SEPARATING APPARATUS Claude B. Schneible, Detroit, Mich. Application April 13, 1942, Serial No. 438,741

2 Claims. 1

An object of the invention is to provide ap-.

paratus which will effectively eliminate solid or foreign particles carried in a medium, the medium being withdrawn free of such particles. A further object is to provide apparatus in which a separator element is provided with improved means whereby foreign or solid particles will be rejected and freed from a withdrawn stream of medium. Other specific objects and advantages will appear as the specification proceeds.

The invention is illustrated, in a preferred embodiment, by the accompanying drawing, in which- Figure 1 is a transverse sectional view of apparatus embodying my invention; and Fig. 2, a rear view of the refuser wheel or separator fan.

In the illustration given, A designates a casing providing an outlet A; B, a driven shaft; and C, a filter fan. 7

The casing A may be of any suitable construction. It may, if desired, provide a chamber about the fan G into which particle-laden gas is drawn, It may also provide a fan casing III in which a suction fan I I or other suitable means for creating a suction is secured. The fan C is positioned so as to guard the opening A and is mounted on the shaft B by which it is rotated.

The filter fan 0, constituting my invention herein, comprises a hub portion I2, to the outer end of which is secured a shroud plate l3. Spaced inwardly from the plate I3 are annular plates I4, I and IS. The plate I4 has an inside diameter less than that of plate I 5, and plate I5 has an inside diameter less than that of plate I6. Between plates l3 and I4 are a plurality of spaced vanes I'I. Between plates I4 and I5 are vanes I8 which are shorter and narrower than vanes I1. Between plates 15 and I6 are vanes [9 which are shorter and narrower in width than vanes I8.

It will be noted that with the structure shown, the interior of the filter fan is hollow, the opening therein tapering rearwardly toward the outlet A, thus providing an outlet which enlarges as it nears the outlet A. The vanes I'I, I8 and I9 extending between the plates I3, I4, I5 and I6 provide a series of radial cells spaced longitudinally of the fan. The cells provided by vanes I! with their associated plates are longer andwider than the cells provided by vanes l8 and their associated plates, while the cells provided by vanes I9 with their associated plates are still smaller than the cells described.

Brace rods 20 are secured, as shown, to the hub portion l2 and to the outer plate I6, as shown best in Fig. 1.

Operatio In the operation of the apparatus, the gaseous medium containing particles is drawn by means of the fan II, or any other source of suction, toward inlet A. The rotation of the filter fan C rejects the solid particles suspended in the gas stream at the point of entrance thereto and allows only the medium freed of the particles to pass through the outlet A.

The filter fan 0 is extremely efficient in this operation by reason of the longitudinally-disposed cells formed by vanes extending between the annular plates. Since the air must pass through the rectangular passageways provided in the filter fan by the arrangement of annular plates and vanes, a variable drop in pressure would be sustained in the different rectangular passages if they were all of the same width, as a result of the difference in their length. This difference in pressure drop, due to the different length of the rectangular openings, is overcome by increasing the openings in width in proportion to their length, a shown more clearly in Fig. 1.

While in the foregoing description, I have set forth certain details of structure for the purpose of illustrating the invention, it will be understood that all of the details are not essential and that the same may be eliminated or substitutions employed therefor without departing from the spirit of my invention.

I claim:

1. In apparatus in which a casing is provided with an outlet opening and a rotatably-mounted shaft extends in front of said opening, a centrifugal separator wheel carried by said shaft and having a central opening communicating with said outlet opening, said wheel comprising a hub carried by said shaft, an end plate closing, a centrifugal separator wheel carried by said shaft and having a central opening communieating with said outlet opening, said wheel comprising an end plate closing the inner end of said wheel, a plurality of annular plates spaced 10 4 7 from each other and said end. plate, the spacing between said plates being progressively less toward said opening, said annular plates being of different inner diameters, causing the opening in said wheel to be progressively larger as it approaches said outlet opening, and vanes between said plates and forming with said plates longitudinally spaced cells which are shorter and narrower toward said outlet opening.

CLAUDE B. SCHNEIBLE. 

